|
KMID : 1134820150440030363
|
|
Journal of the Korean Society of Food Science and Nutrition
2015 Volume.44 No. 3 p.363 ~ p.369
|
|
|
Proximate Compositions and Biological Activities of Lactuca indica L. Seonhyang and Wild Species Depending on Harvesting Time
|
|
Kwon Hye-Jeong
Jeong Eun-Kyoung
Jeong Hye-Jeong
Kim Si-Chang
Heo Nam-Ki
Noh Hee-Sun
|
|
|
Abstract
|
|
|
|
We investigated the effect of harvesting time on the proximate compositions and biological activities of Lactuca indica L. Seonhyang and wild species. The highest moisture content (91%) was obtained from Seonhyang harvested in June. The wild species harvested in August showed the highest crude protein (4.8%) and crude fiber contents (2.7%). Potassium contents were 626∼684 mg/100 g, and no significant difference in harvesting time was observed between Seonhyang and wild species. Calcium and phosphate contents of Seonhyang leaves harvested in August were highest (350 mg/100 g and 123 mg/100 g, respectively). The highest total polyphenol and total flavonoid contents were observed for wild species harvested in June (60 mg/g and 126 mg/g, respectively). Ethanol extracts of Seonhyang and wild species leaves harvested in June showed the highest DPPH radical scavenging activity (95%). α-Amylase inhibitory activity was highest (94.8%) in water extract of Seonhyang leaves harvested in July. Nitric oxide production inhibitory activity was 14.3 μM in ethanol extracts of Seonhyang and 16.8 μM in ethanol extracts of wild species harvested in June. Calcium content and α-amylase inhibitory activity of Seonhyang leaves were greater than those of wild species leaves. These results suggest that Seonhyang leaf can be used to develop processed foods.
|
|
|
KEYWORD
|
|
|
Lactuca indica L., proximate composition, antioxidant activity, α-amylase, nitric oxide scavenging activity
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|